Item 1

https://backpack.tf/item/16245646385

Sale 1

https://backpack.tf/profiles/76561198049679363#!/compare/1760400000/1760832000

https://backpack.tf/profiles/76561199581722058#!/compare/1760313600/1760400000

Dumped for an unknown amount

Sale 2

https://backpack.tf/profiles/76561199581722058#!/compare/1761177600/1761264000

https://backpack.tf/profiles/76561198080004660#!/compare/1761264000/1761350400

I counted ~27 keys matching

Sale 3

https://backpack.tf/profiles/76561198080004660#!/compare/1762128000/1762473600

https://backpack.tf/profiles/76561199581722058#!/compare/1762300800/1762387200

Re-dumped for an unknown amount

Sale 4

https://backpack.tf/profiles/76561199581722058#!/compare/1762560000/1762819200

https://backpack.tf/profiles/76561199014107364#!/compare/1761177600/1763078400

No clue

Item 2

https://backpack.tf/item/16004867065

Just mp transfers...

Item 3

https://backpack.tf/item/15802270644

Sale 5

https://backpack.tf/profiles/76561198046137681#!/compare/1757894400/1762473600

https://backpack.tf/profiles/76561198453530349#!/compare/1762387200/1762473600

Dumped for 23 keys, 27.11 ref = ~24 keys

Item 4

https://backpack.tf/item/15412275515

Just qs.store bot transfers

Item 5

https://backpack.tf/item/14456351366

Sale 6

https://backpack.tf/profiles/76561198970897660#!/compare/1757376000/1757635200

https://backpack.tf/profiles/76561199136910514#!/compare/1757203200/1758240000

No clue

Sale 7

https://backpack.tf/profiles/76561199136910514#!/compare/1758499200/1758585600

https://backpack.tf/profiles/76561199084784906#!/compare/1758412800/1758499200

Dumped for an unknown amount

Then just qs.store bot transfers...

Item 6

https://backpack.tf/item/5055107796

Sale 8

https://backpack.tf/profiles/76561199059698603#!/compare/1756857600/1756944000

https://backpack.tf/profiles/76561199548630124#!/compare/1756598400/1756944000

No clue

Sale 9

https://backpack.tf/profiles/76561199548630124#!/compare/1757030400/1757548800

https://backpack.tf/profiles/76561199564942025#!/compare/1757462400/1757548800

Dumped for an unknown amount

Sale 10

https://backpack.tf/profiles/76561199564942025#!/compare/1757980800/1758067200

https://backpack.tf/profiles/76561198091502579#!/compare/1757980800/1758067200

Only 15 keys trace, incomplete

Item 7

https://backpack.tf/item/919292190

Duped, don't think there's anything here...

Mp.tf

https://marketplace.tf/items/tf2/611;5;u34

$79.99 / $1.84 = ~43 keys (Aug 22)

$49.99 / $1.83 = ~27 keys (Nov 16)

Total Sales

24, 27, 27, 43

https://gyazo.com/71c62665c8cdc5a20da360725cbfc3a9

43 is a clear outlier, 24 was a buyer dump

I'll just go with 27 keys flat c:

Unsolds:

https://backpack.tf/item/15802270644 - ~28

https://backpack.tf/item/713915317 - ~34.5

https://backpack.tf/item/5055107796 - $69.99

https://backpack.tf/item/919292190 - 40